There are many occasions where a HP/UX kernel should be customised to improve its performance. This can be done using SAM, often choosing a pre-configured kernel, but it is important to understand how the kernel files are layed out, and how reconfiguration can be effected on a lower level.
This is the manual procedure for doing so:
Manual Kernel Configuration Procedure
# cd /stand/build
Create a new system file from the running kernel.
# /usr/lbin/sysadm/system_prep -s /stand/build/system
Edit the new system file produced and build the new kernel.
# /usr/sbin/mk_kernel -s /stand/build/system
Back up old vmunix and system files
# mv /stand/system /stand/system.prev
Move new files into place and reboot:
# mv /stand/build/system /stand/system # kmupdate /stand/build/vmunix_test # shutdown -ry 0